Gamma rays, X-rays, ultraviolet light, visible light (the visible rainbow), infrared light, microwaves, and radio waves are all forms of light (also called electromagnetic radiation). Together, they make up the electromagnetic spectrum. Each band of light has a different range of wavelengths: Gamma rays are the shortest and radio waves are the longest.
Credits
Illustration
NASA, ESA, Leah Hustak (STScI)
